pneumothorax is seen in all except

a.marfan syndrome
b.assisted ventilation
c.eosinophilic granuloma
d.bronchopulmonary aspergillosis


Ans: D


Spontaneous pneumothoraces are divided into two types:
Primary, which occurs in the absence of known lung disease, and
Secondary, which occurs in someone with underlying lung disease.

The exact cause of primary spontaneous pneumothorax is unknown, but established risk factors include male sex, smoking, and a family history of pneumothorax.

Secondary spontaneous pneumothorax occurs in the setting of a variety of lung diseases. The most common is chronic obstructive pulmonary disease, which accounts for approximately 70% of cases

Others are:
-Acute severe asthma,
-Cystic fibrosis
-Pneumocystis pneumonia (PCP),
-Tuberculosis,
-Necrotizing pneumonia
-Sarcoidosis,
-Idiopathic pulmonary fibrosis,
-Histiocytosis X,
-Lymphangioleiomyomatosis (LAM)
-Rheumatoid arthritis,
-Ankylosing spondylitis,
-Polymyositis and dermatomyositis,
-Systemic sclerosis,
-Marfan's syndrome and
-Ehlers–Danlos syndrome
-Lung cancer,
-Sarcomas involving the lung